“The driving source behind sex in the 1990s, whether you’re partnered or single, is the human imagination,” Levine declared. The place where imaginations go wild, anonymity is the rule, and desire runs amok.” Like earlier safe-sex educators, Levine used multiple-choice and fill-in-the-blank questionnaires to help readers take stock of what they wanted. The chapter “Overcoming Sexual Inhibitions,” for instance, started with a quiz intended to help you assess how uptight you are. If your best friend started unexpectedly talking about his or her sex life over coffee one day, you would:a. A service called Tri Ess connected heterosexual couples who were into cross-dressing.